西南交通大学学报

Analysis on the Change of Market Occupancy Ratio (MOR) Trend of Railway Passenger Transportation(RPT)

ZOUJun-wan

2000, 13(3): 225-229.

[Abstract](1581)

Abstract:
The paper describes the variational state ofMORof eachmode of transportation in pastyears,and analyzes the reasonwhy theMOR of RPTis decreasing, Meanwhile, the trend ofMOR and essential market share of RPT is forecasted, and five main countermeasures are put forward.

The Discussion about the Operation of Long-Short Distance Passenger Trains

YIEHuai-zhen, YANG Yong-lan, WANG Yan

2000, 13(3): 230-234.

[Abstract](1445)

Abstract:
In market economic, it is a key theme that how to optimize the operation scheme of passenger trains reasonably to match long-short distance passengers’requirements. The article launches on some con- cepts, then states a new forecast-method of traffic quantity and some principles for drawing the operation scheme.

The Study of Confirming Train’s Utilized Rate Based on the Principle of Economic Benefit

SHANWen-hao, YEHuai-zhen

2000, 13(3): 235-238.

[Abstract](1290)

Abstract:
As the railway is stepping into the market gradually, the operation of passenger trains must con- sider economic benefit as well as social benefit. As far as railway passenger transportation is concerned, based on the analysis of passenger transportation income and payout, the article discusseswhat utilized rate of passenger trains should match with the Principle of Economic Benefit. Meanwhile, the paper advances that calculating the economic benefit of passenger must distinguish the unit cost of different kinds of trains with a real expample analyzed and computed.

The Investigation and Analysis on the Passenger Transportation Market between Railways and Highways

LUOXiu-yun, YAN Yu-song

2000, 13(3): 239-241.

[Abstract](1341)

Abstract:
According to the investigations on the selection of transport means, the waiting times, the ticket prices and the service qualities, the railway s advantages on the passengertransportationmarkets are pointed out and the problems to be solved are given. Some useful improving measures for railway passenger trans- portation will be suggested which can be used to enhance the competitive power of railway passenger trains.

On the Model for Production Optimal Decision of Railway Transport Products

LI Zong-ping, LIUHai-yan, DUWen

2000, 13(3): 242-245.

[Abstract](1362)

Abstract:
By analyzing the decision course of railwaytransport products undermarket economy, The model that is determined by the objective of maximum benefit under the equilibrium of supply and demand has- been obtained. Solving the model, the sorts, quantity and optimum route of transport supply (products) should be ascertainable. Under control of total cost, the price and class of transport products can be ad- justable. Onlyresolvingmethod is decomposition algorithmbecause the model is a big problem,and the ide- al of two kinds of algorithm are offered.the model should have a directive function because it is correspond to the actual case of the market of railway transport.

Some of Thinking for Reforming Railway Transport Products Statistics

DUWen, RENMin

2000, 13(3): 246-249.

[Abstract](1206)

Abstract:
In pacewith developmentofthe market economy and transformation ofthe transport products from quantity to quality, the railwayfreightvolume has shown in the structure, quality and value ofthe products. So, the statistics method reflecting railway transport capacity and freight volume should be reformed. For this reason, a certain number of thinking is put forward in the paper.

Optimal Model and Algorithm on Stage Plan for Section Station

YUANQing-da, DUWei, LIQing-song

2000, 13(3): 250-254.

[Abstract](1520)

Abstract:
Based on the target of sending out vehicle on time and full-axis within the stage in section sta- tion, this paper established a 0-1 programming.And based on the theory of big system, the whole system is decomposed into four subsystems, and an optimal decomposing heuristic algorithm is proposed. An optimal decision base for automatically making the stage plan of the section station with computer is supplied.

The Study on DSS of the Technical Station Dispatching ———Rationally Utilizing Reception and Departure Siding

LvHong-xia, NIShao-quan, JIHong-ye

2000, 13(3): 255-258.

[Abstract](1344)

Abstract:
In order to solve the problem of rationally utilizing reception and departure siding of the computer-aided making stage station working plan system, a 0-1 programming model is established and this model is further divided into two simple 0-1 programmingmodel. Bythismethod, it become easy and fastto resolve the 0-1 programming model.

The Frame Design of Making Train Diagram System with Computer Based on OOP

SHUAIBin, QINGXue-jiang

2000, 13(3): 259-263.

[Abstract](1412)

Abstract:
In this paper, the making train diagram with computer software frame structure based on OOP was introduced. The Frame structure based on OOP was designed by making use of MFC(Microsoft Fundament Class) ofVisual C++6.0, And the process ofmessage transmission and layerrelation amongthe member objects in the frame structure were detailed to description.

Layout on Distributed Database System for Programming Train Diagram by Computer

XIQing

2000, 13(3): 264-267.

[Abstract](1310)

Abstract:
On the basis of analysing the client/server ,the paper layouts the network of database system for programming train diagram by computer using the structured design and distributed PowerBuilder programming.

Design on the Access to Distributed Database of the Network Train Diagram System

PENG Qi-yuan, WANGJun, CUIXian-bo

2000, 13(3): 268-272.

[Abstract](1343)

Abstract:
In this paper the key technique—access to database is studied, which based on the C/S structure to organixe and manage the database on train diagram system. The method to fulfills the real time access to database inmulti users, which takes use of the PowerBuilder andVisual C++as developingtools. Application shows that we can link and access to database rapidly and efficiently with the uses of the method.

The Analysis and Construction of Train Routine Based on Graphics Theory

ZHANG Yu-cheng, LUhong-xia, WANG Bao-jie

2000, 13(3): 273-276.

[Abstract](1298)

Abstract:
Based on graphics theory and analyse of system structure, this paper presents the definition and description of train routine, and the principle and method of construction of train routine, which describe the train routine clearly and reduce the input and storage consumption.

The Genetic Algorithms for the Carrying Capacity of Parallel Train Working Graph on Single Railway Lines

YAN Yu-song

2000, 13(3): 277-279.

[Abstract](1693)

Abstract:
In this paper, a genetic algorithm based on the integer programming model is given, which can be used to calculate the carrying capacityof parallel trainworkinggraphon single railway lines. Thisgenetic algorithm is proved to be possible and useful for the problem of calculating the carrying capacity.

Optimization Model and Application on the Design of Train Speed Control Mode on Special Railways for Passenger Transportation

LIULan

2000, 13(3): 280-283.

[Abstract](1359)

Abstract:
Based on the quantitative expression of the relation between the headway and the speed classes of the advanced train speed control system, this paper proposes a theoretical optimizationmodel focused on the application of train speed control mode used in the operation environment of complete high-speed trains on special railways for passengertransportation, expounds the model construction, and introduces the developed results about the calculation program of relative parameters. At last, this paper tests and verifies the above model and relative programs with a practical example, and gives some conclusion.

The Effect of Rail Transportation on the Urban Structure

QIN Ying-bing, DUWen

2000, 13(3): 284-287.

[Abstract](1401)

Abstract:
In this paper, the characters of two kinds of urban structure, the concentric circles with single center and the spool thread with poly-centers, have been discussed. It is pointed out that the most ideal model of development of our city is the spool threadwith poly-centers by the viewof sustained development. The important inducing impact of rail transportation on the change of urban structure is discussed from the population, the environment and the land. At last, some problems of rail transportation have been shown from the present situation of our cities.

Research on Fundamental Pattern of Urban Rail Transit Network

WANG Zhong-qiang, LIQing-song, CHENXu-mei

2000, 13(3): 288-292.

[Abstract](1216)

Abstract:
Fundamental pattern ofURTnetwork is a key point duringURTplanning. The paper applies the graphic theory to analyze URTN fundamental pattern from several aspects. Constitutional method of initial network is investigatedwith pattern analysis. The algorithmof optimal model can be used to probe advanced network. The discussions included in this paper are useful in planningURTproject.

Research on Modeling Approach for Urban Traffic System Analysis

YANQi-peng, WANG Zhong-qiang

2000, 13(3): 293-296.

[Abstract](1323)

Abstract:
This paper analyses lots of traffic phenomena in urban over our country. An analysis model for traffic system is developed by means of system analysis theory. On the basis of traditional approach, the relation matrix of traffic problem is improved. Calculating process of the model and a modeling example are detailed. The modeling approach can also be applied to other complicated system.

Analyses on Multi-Traffic Flow s Characteristics

LUOXia, DUJin-you, CHEN Ying-wen

2000, 13(3): 297-300.

[Abstract](1461)

Abstract:
Description on multi-traffic flow s characteristics is the basis for the study on theory of multi- traffic flow. This paper analyzes the vehicle s type composition of the high-class highway in the future, specify the scope of study on theory of multi-traffic flow, and puts forward two basic concepts, namely randomizing degree and viscosity. Through theoretical calculation and practical measuring, gained the speed pattern and jamming density of the multi-traffic flow are obfained.

Traffic Flow Model under the Control of Traffic Lamp

LONGXiao-qiang, YANQi-peng

2000, 13(3): 301-305.

[Abstract](1270)

Abstract:
When traffic lamp is changed, traffic volume and density will vary. On the basis of traffic volume-density equation, the functions of continuous and separate traffic volume are presented. The traffic flow under the control of traffic lamp is discussed by using these functions.

The Management Information System of Main Hub City Road Transportation Statistical Index

HEMing-lu, HUO Ya-min, LUOXia

2000, 13(3): 308-310.

[Abstract](1269)

Abstract:
This paper investigates the status quo of main-hub-city road transportation statistics and analyzes the system object, data processing and data dictionary. It also it designs the system function, control structure and management information system, realizing the efficiency, accuracy and automatism of the statistical work.

Logistics Distribution Center Allocation Model

LIUHai-yan, LI Zong-ping, YEHuai-zhen

2000, 13(3): 311-314.

[Abstract](1683)

Abstract:
The article analyseis the relation of stock, transport, and Distribution center in the system of logistics. Bymeans ofoptimizationmethod, the mathematical model of logistics Distribution center allocation is put forward. It is amixed integer programmingmodel.The algorithmwhich refers to the benders,smethod is given. Limited quantity of stipulations ensures the astringency of the algorithm.The model should be practical because of variety of reality facts have been considered.

A Location Model with Consideration on Inventory under Optimal Inventory Policy

LIQing-song, YUANQing-da, DUWen

2000, 13(3): 315-318.

[Abstract](1363)

Abstract:
Most of the currentmodel on location of logistics distribution centers had included justthe costof transportation and construction of the center. However, this paper showed that the cost of inventory should be considered since our analysis give insight into the relationship of the centers number and their inventory cost under several optimal stock policy. Furthermore a model integrating inventory impacts into optimization for locating distribution centers is put forward.

Dynamic Visual Field of Driver with Safety Driving

ZHANGDian-ye

2000, 13(3): 319-322.

[Abstract](1357)

Abstract:
The drivers continuos to apperceive and judge moving and static objects outside automobile. To apperceive scope is very important for driving safety. Even though static visual field scope is similar, dynamic visual field scatter being greater. The result shown that static visual field cannot completely reflect practicality visual levels. Test of dynamic visual field for drivers shows significately difference between accidentgroup and non-accident group (p<0.05). Static visual field for drivers don’t exit difference between accident group and non-accident group (p<0.05). It proposes relation between dynamic visual field and maximal safety driving speed.

Study on Safety Culture Management Mode

YUANXu, CAO Qi

2000, 13(3): 323-326.

[Abstract](1486)

Abstract:
The paper systemically analyzes the basic conception of safety culture. In the viewof essentialism and specialism, structure and function of safety culture are discussed, giveing the idea of establishing safety culture. Also analyzed are relation of safety culture and enterprise, safety culture and safety education, and safety culture and other safety managements.

A Study on Liquidation between National Railway and Regional(Joint Venture) Railway

SHUAIBin, SHENJin-feng

2000, 13(3): 327-331.

[Abstract](1367)

Abstract:
The principal problemon liquidation existed between national railway and regional(joint venture) railway is analyzed and the intent of reasonable liquidation is discussed. A complete set of standard and measurable expenditure item is established basing on current liquidation method. Solution of the liquidation problem is put forward according to characteristics of pool and through traffic under different circumstances with pieces of correlative advices given.

Study on Route Choice Condition of Dynamical Transportation Network with Overflow Cost

ZHOUHe-fang, ZHOUXian-wei

2000, 13(3): 332-334.

[Abstract](1216)

Abstract:
Overflow cost means the cost that is delivered to users when the transportation load of a route exceeds the standard load of this route. When the load is lower than the standard, the costwill be given to users as an allowance. Through taking the overflowcost into consideration, the authors set up some restraint conditions, such as dynamical user optimum route choice condition and dynamical user optimum overflow cost,etc. Thismakes a basis forthe furtherresearchon founding a route choice variational inequalitymodel of dynamical transportation networks with overflow cost, and on its algorithm study.

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2000 Vol. 13, No. 3